wbacc The development course1949 -Zuoyan Zhu set up the hardware workshop,the specialized in hardware manufacturing:hutch ark parts and lock parts .1970 -Dinghuan Zhu's son -Chongqin Zhu ,He set up the individual hardware factory. Specialized is engaged in and the development of aluminum and copper

This valve is used together with pump for daily water supply in high-rises, functioned to ensure the hydraulic pressure of water supply system not exceeding the specified pressure, thus to safeguard water supply pipeline and other equipments.Note: We accept design and manufacture of various non-stan